TW201821704A - Screw structure capable of improving the cutting and chip removal capability of a screw and reduce the torque required for a screwing operation of the screw - Google Patents

Abstract

The present invention relates to a screw structure, which includes a screw head and a rod body extending downward from the screw head. The rod body has an outer periphery circumferentially formed thereon a thread. The rod body has a lower end formed thereon a tapered tail section, and the thread does not extend into the tapered tail section. The tapered tail section is convexly provided with at least one rib. The rib has an edge surface having a wavy-toothed shape so as to provide the screw with an improved cutting and chip removal capability and also to reduce the torque required for a screwing operation of the screw, thereby achieving an effect of saving labor and time in the process of operation and also preventing the occurrence of defects of wood cracking to thus enhance the operation quality of the screw.

Description

   Screw structure   

The invention relates to a screw structure, in particular to a screw structure that can improve the cutting and chip removing ability of the screw, and at the same time can reduce the torque when the screw is screwed in, thereby achieving the effect of saving labor and time, and preventing wood crack The absence of the screw structure can improve the quality of the screw construction.

According to the press, wood screws are mainly used for the connection of wooden workpieces. The wood screws have the function of directly drilling holes in wood materials, and thus the function of fast locking wooden workpieces.

As shown in FIG. 1, the screw 1 includes a screw head 11, and a rod body 12 extending downward from the screw head 11. An outer peripheral edge of the rod body 12 is provided with spirally encircling screw teeth 13, and a lower end of the rod body 12 is provided. A sharp tail portion 14 is provided; in order to improve the cutting wood and chip removal effect of the screw 1, a convex rib 15 is protruded between the screw 13 and the screw 13 in the rod body 12, and the convex rib 15 is used to enhance the Cutting and chip removal effect of screw 1.

The above-mentioned conventional screw 1 can improve the effect of the screwing operation of the screw 1; however, how to design a screw 1 structure so that the screw 1 can ensure that the wooden workpiece does not crack during the screwing operation of the screw 1 As well as reducing the torque of screwing friction and discharging the sawdust more smoothly, it has become a major issue for screw manufacturers.

The main purpose of the present invention is to effectively solve the problem that the conventional screw can easily cause cracking of the wooden workpiece due to excessive pressure, which will damage the structural strength of the wooden workpiece and the lack of the screwing effect of the nail body.

The technical means adopted by the present invention to achieve the above objective is: a screw structure, a rod body extending downward from the screw head, an outer peripheral ring of the rod body is provided with a screw thread, and a lower end of the rod body is provided with a pointed tail portion, The thread is not extended to the pointed tail portion, and the pointed tail portion is provided with at least one convex rib, and the end surface of the convex rib is wavy-toothed.

The effect that the present invention can achieve through the above technical means is that, since the pointed end of the screw is provided with at least one convex rib, the end surface of the convex rib is wavy-toothed, thereby improving the cutting and Chip removal ability, at the same time can reduce the torque when the screw is inserted, which can achieve the effect of saving labor and time, and the use of this special end face design can cut wood fiber, chipping, damage and other effects, and can prevent wood cracking Due to the lack of, the construction quality of the screw can be improved.

Another effect that can be achieved by the present invention through the above technical means is that: the point ribs are further formed by the point ribs being further arranged in the form of point convex columns, and the points of the point convex ribs are arc-shaped or It is tapered, and this special end surface design can be used to cut, chip, and destroy wood fibers. This can further improve the cutting and chip removing ability of the screw, and at the same time reduce the torque when the screw is screwed in. The effect of labor-saving and time-saving construction can prevent the lack of wood cracks, which can improve the construction quality of the screw.

1‧‧‧screw

11‧‧‧Screw head

12‧‧‧ shaft

13‧‧‧Screw

14‧‧‧ pointed tail

15‧‧‧ raised rib

2‧‧‧ Screw

21‧‧‧Screw head

22‧‧‧ Rod

23‧‧‧Screw

24‧‧‧ pointed tail

25‧‧‧ raised rib

251‧‧‧ wavy tooth shape

252‧‧‧ Triangular Tooth

253‧‧‧ wedge-shaped

254‧‧‧ Wedge-shaped upper part and inverted triangular tooth shape at the bottom

255‧‧‧ rectangular tooth

25a‧‧‧point convex rib

25a1‧‧‧arc

25a2‧‧‧ cone

Figure 1 is a perspective view of a conventional screw.

Figure 2 is a perspective view of the screw of the present invention.

Figure 3 is a partial enlarged view of Figure 2.

FIG. 4 shows another embodiment of the screw of the present invention.

Figure 5 is a partial enlarged view of Figure 4;

FIG. 6 shows another embodiment of the screw of the present invention.

Fig. 7 is a partial enlarged view of Fig. 6.

FIG. 8 shows another embodiment of the screw of the present invention.

Figure IX is a partial enlarged view of Figure VIII.

FIG. 10 shows a first embodiment of the raised rib of the screw of the present invention.

FIG. 11 is a second embodiment of the convex rib of the screw of the present invention.

FIG. 12 is a third embodiment of the raised rib of the screw of the present invention.

FIG. 13 is a fourth embodiment of the convex rib of the screw of the present invention.

FIG. 14 is a fifth embodiment of the convex rib of the screw of the present invention.

FIG. 15 shows an embodiment of the dot-shaped raised rib of the screw of the present invention.

FIG. 16 is an embodiment of the arc-shaped dot-shaped convex rib of the screw of the present invention.

FIG. 17 is an embodiment of a tapered point-shaped convex rib of the screw of the present invention.

In order to make it easier for your reviewers to understand the effect that the structure of the present invention can achieve, the description with the drawings is as follows: As shown in FIGS. An extended rod body 22 is provided with screw teeth 23 at the outer peripheral ring, and a sharp tail portion 24 is provided at the lower end of the rod body 22, and the screw teeth 23 are not extended to the sharp tail portion 24; the sharp tail portion 24 is convex There is at least one raised rib 25; the raised rib 25 can be arranged along the direction of the screw 23 or against the direction of the screw 23, or can be arranged parallel to the longitudinal direction of the rod body 22.

As shown in Figures two, three, ten, eleven, twelve, thirteen, and fourteen, the end faces of the raised ribs 25 are wavy teeth 251, triangular teeth 252, wedge teeth 253, and the upper wedge bottom is inverted. The triangular tooth shape 254 or the rectangular tooth shape 255, the end face of the convex rib 25 may be wavy tooth shape 251, triangular tooth shape 252, wedge tooth shape 253, upper wedge bottom inverted triangle tooth shape 254, rectangular tooth shape during implementation. 255 and other shapes are used in different combinations to improve the cutting and chip removal capabilities of the screw 2 and reduce the torque when the screw 2 is screwed in. This special end face design can be used to cut, chip, and destroy wood fibers. Such effects can further save the time and effort of construction, and can prevent the lack of cracks in the wood, thereby improving the construction quality of the screw 2.

As shown in FIGS. 2, 3, 15, 16, and 17, the raised ribs 25 are further formed as dot-shaped raised ribs 25 a formed by arranging point-shaped convex columns, and the points of the point-shaped raised ribs 25 a are arcs. Shape 25a1 or tapered 25a2; this special end face design can be used to cut, chip, and damage wood fibers, thereby improving the cutting and chip removing ability of the screw 2 and reducing the screw 2 screwing time The torsional force can further achieve the effect of saving labor and time, and can prevent the lack of cracks in the wood, thereby improving the construction quality of the screw 2.

As shown in Figures 4 and 5, the screw 2 has a screw head 21, a rod body 22 extending downward from the screw head 21, an outer peripheral ring of the rod body 22 is provided with a screw 23, and a lower end of the rod body 22 is provided. There is a pointed tail portion 24 extending to the pointed tail portion 24; the shaft 22 of the screw 2 is provided with at least one protruding rib 25 adjacent to the pointed tail portion 24. More specifically, the protruding rib 25 is provided on Above the pointed tail portion 25, the raised rib 25 may be disposed along the direction of the screw 23 or against the direction of the screw 23, or may be disposed parallel to the long axis of the rod body 22.

As shown in Figures four, five, ten, eleven, twelve, thirteen, and fourteen, the end faces of the raised ribs 25 are wavy teeth 251, triangular teeth 252, wedge teeth 253, and the upper wedge bottom is inverted. The triangular tooth shape 254 or the rectangular tooth shape 255, the end face of the convex rib 25 may be wavy tooth shape 251, triangular tooth shape 252, wedge tooth shape 253, upper wedge bottom inverted triangle tooth shape 254, rectangular tooth shape during implementation. 255 and other shapes are used in different combinations. This special end face design can be used to cut, chip, and destroy wood fibers. This can improve the cutting and chip removal capabilities of the screw 2 and reduce the screw 2 screwing time. The torsional force can further achieve the effect of saving labor and time, and can prevent the lack of cracks in the wood, thereby improving the construction quality of the screw 2.

As shown in Figures 4, 5, 15, 16, and 17, the raised ribs 25 are further formed as dot-shaped raised ribs 25a formed by arranging dot-shaped convex columns, and the points of the point-shaped raised ribs 25a are arcs. Shape 25a1 or tapered 25a2; this can further improve the cutting and chip removing ability of the screw 2, and at the same time reduce the torque when the screw 2 is screwed in, thereby achieving the effect of saving labor and time, and preventing wood turtles The absence of cracks can improve the construction quality of the screw 2.

As shown in FIGS. 6 and 7, the screw 2 has a screw head 21, and a rod body 22 extending downward from the screw head 21. An outer peripheral ring of the rod body 22 is provided with a screw 23, and a lower end of the rod body 22 is provided. There is a pointed tail portion 24, which is extended to the pointed tail portion 24; the rod body 22 of the screw 2 is provided with screw teeth 23, and at least one convex rib 25 is protruded between the screw teeth 23 and the screw teeth 23 The protruding ribs 25 can be arranged along the direction of the screw 23 or against the direction of the screw 23, or can be arranged parallel to the long axis of the rod body 22.

As shown in Figures 6, 7, 10, 11, 12, 13, and 14, the end faces of the ribs 25 are wavy teeth 251, triangular teeth 252, wedge teeth 253, and the upper wedge bottom is inverted. The triangular tooth shape 254 or the rectangular tooth shape 255, the end face of the convex rib 25 may be wavy tooth shape 251, triangular tooth shape 252, wedge tooth shape 253, upper wedge bottom inverted triangle tooth shape 254, rectangular tooth shape during implementation. 255 and other shapes are used in different combinations. This special end face design can be used to cut, chip, and destroy wood fibers. This can improve the cutting and chip removal capabilities of the screw 2 and reduce the screw 2 screwing time. This special end face design can be used to cut, chip, and damage wood fibers, which can save labor and time, and prevent the lack of wood cracks, which can improve the screw 2 Construction quality.

As shown in Figures 6, 7, 15, 16, and 17, the raised ribs 25 are further formed as dot-shaped raised ribs 25a formed by arranging dot-shaped convex columns, and the points of the point-shaped raised ribs 25a are arcs. Shape 25a1 or tapered 25a2; this special end face design can be used to cut, chip, and damage wood fibers, thereby improving the cutting and chip removing ability of the screw 2 and reducing the screw 2 screwing time This special end face design can be used to cut, chip, and damage wood fibers, which can save labor and time, and prevent the lack of wood cracks, which can improve the screw 2 Construction quality.

As shown in FIGS. 8 and 9, the screw 2 has a screw head 21, and a rod body 22 extending downward from the screw head 21. An outer peripheral ring of the rod body 22 is provided with a screw 23, and a lower end of the rod body 22 is provided. There is a pointed tail portion 24, which is extended to the pointed tail portion 24; the rod body 22 of the screw 2 is provided with at least one protruding rib 25 above the protruding thread 23, and the protruding rib 25 can follow the thread The 23 direction is arranged opposite to the 23 direction of the screw teeth, or is arranged parallel to the long axis of the rod body 22.

As shown in Figures eight, nine, ten, eleven, twelve, thirteen, and fourteen, the end faces of the raised ribs 25 are wavy teeth 251, triangular teeth 252, wedge teeth 253, and the upper wedge bottom is inverted. The triangular tooth shape 254 or the rectangular tooth shape 255, the end face of the convex rib 25 may be wavy tooth shape 251, triangular tooth shape 252, wedge tooth shape 253, upper wedge bottom inverted triangle tooth shape 254, rectangular tooth shape during implementation. 255 and other shapes are used in different combinations. This special end face design can be used to cut, chip, and destroy wood fibers. This can improve the cutting and chip removal capabilities of the screw 2 and reduce the screw 2 screwing time. The torsional force can further achieve the effect of saving labor and time, and can prevent the lack of cracks in the wood, thereby improving the construction quality of the screw 2.

As shown in FIGS. 8, 9, 15, 16, and 17, the raised ribs 25 are further formed as dot-shaped raised ribs 25 a formed by arranging point-shaped convex columns, and the points of the point-shaped raised ribs 25 a are arcs. Shape 25a1 or tapered 25a2; this special end face design can be used to cut, chip, and damage wood fibers, which can further improve the cutting of the screw 2 and reduce the pressure on the wood, and reduce the screw 2 The torque at the time of entry can further save the time and effort of construction, and can prevent the lack of cracks in the wood, thereby improving the construction quality of the screw 2.

The effect of the present invention is that, since the pointed tail portion 24 of the screw 2 is convexly provided with at least one convex rib 25, the end surface of the convex rib 25 is wavy tooth shape 251, triangular tooth shape 252, wedge tooth shape 253, and upper wedge shape. The bottom inverted triangular tooth shape 254 or rectangular tooth shape 255 can use this special end face design to cut, chip, and damage the wood fiber, thereby improving the cutting and chip removing ability of the screw 2 and reducing the screw. 2 The torque when screwing in can achieve the effect of saving labor and time, and can prevent the lack of cracks in the wood, which can improve the quality of the screw 2 construction.

Another effect of the present invention is that the point ribs 25a formed by further arranging the point ribs 25 in the form of dot-shaped convex columns are circular arc-shaped 25a1 or cone-shaped 25a2. ; This can further improve the cutting and chip removing ability of the screw 2, and at the same time reduce the torque when the screw 2 is screwed in, thereby achieving a labor-saving and time-saving effect, and can prevent the lack of wood cracks. Improve the construction quality of the screw 2.

In summary, the screw of the present invention can effectively improve the use of conventional screws through repeated testing. It has practical, novel and progressive elements and has not been found in the market or in publications. I would like to urge you to examine and approve the grant of patent rights for inventions.

Claims (13)

    A screw structure, the screw has a screw head, a rod body extending downward from the screw head, an outer peripheral ring of the rod body is provided with screw teeth, a lower end of the rod body is provided with a pointed tail portion, and the screw teeth are not extended to The pointed tail portion is characterized in that the pointed tail portion is provided with at least one convex rib, and the end surface of the convex rib is wavy-toothed.         A screw structure, the screw has a screw head, a rod body extending downward from the screw head, an outer peripheral ring of the rod body is provided with screw teeth, a lower end of the rod body is provided with a pointed tail portion, and the screw teeth are extended to the tip The tail part is characterized in that at least one convex rib is convexly arranged on the rod body of the screw immediately adjacent to the pointed tail part, and an end surface of the convex rib is wavy-toothed.         A screw structure includes a screw head, a rod body extending downward from the screw head, an outer peripheral ring of the rod body being provided with a screw tooth, and a lower end of the rod body being provided with a pointed tail part, wherein the screw tooth is extended It is set to the pointed tail part, which is characterized in that a screw thread is provided on the rod body of the screw, and at least one convex rib is protruded between the screw thread and the screw thread, and an end surface of the convex rib is wavy-toothed.         A screw structure includes a screw head, a rod body extending downward from the screw head, an outer peripheral ring of the rod body being provided with a screw tooth, and a lower end of the rod body being provided with a pointed tail part, wherein the screw tooth is extended It is set to the pointed tail part, which is characterized in that at least one convex rib is convexly arranged above the screw body of the screw body, and the end surface of the convex rib is wavy-toothed.         According to the screw structure described in any one of claims 1 to 4, the end surface of the raised rib may have a triangular tooth shape.         According to the screw structure described in any one of claims 1 to 4, the end surface of the raised rib may have a wedge-shaped tooth shape.         According to the screw structure described in any one of claims 1 to 4, the end surface of the raised rib may be in the shape of an upper wedge bottom inverted triangle tooth.         According to the screw structure described in any one of claims 1 to 4, the end surface of the raised rib may have a rectangular tooth shape.         According to the screw structure described in any one of claims 1 to 4, the protruding ribs are further formed as dot-shaped protruding ribs formed by arranging dot-shaped protruding columns.         The screw structure described in item 9 of the scope of patent application, wherein the points of the dot-shaped raised ribs are arc-shaped.         The screw structure described in item 9 of the scope of the patent application, wherein the points of the point-shaped convex ribs are tapered.         According to the screw structure described in any one of claims 1 to 4, the convex ribs can be arranged along the direction of the screw teeth or against the direction of the screw teeth, or in parallel with the longitudinal axis of the rod body.         The screw structure according to any one of claims 1 to 4, wherein the end surface of the raised rib may be wavy teeth, triangular teeth, wedge teeth, upper wedge bottom inverted triangle teeth Shape, rectangular tooth shape and other shapes for different combinations.